“For the button to work you have to press the brake pedal. If you brake at this moment, it is obvious that pressing the button will cause the car to stall.
As a rule, modern cars are equipped with all kinds of protection against accidental clicks. This is the so-called “fail-safe” protection, which will not allow the engine to be turned off at full speed. Therefore, there is little chance that something will happen if it is accidentally pressed. But car devices, of course, are different and the answer will depend on the specific car model.
In our practice, there have been stories that due to refueling with low-quality fuel, the car stalled and the seat began to move to its original position. Drivers attributed those moments to the activated Start-Stop system. But most of the time the problem was not with the button.
However, if some exceptional situation occurs and, when pressing “Start-Stop” at high speed, the protection fails, the engine will stall, the power steering and the brake booster will stop working. This can cause a loss of control. However, I can assume that the electronic control unit (ECU) will “see” that the car is moving and will not put the gearbox into “park” mode. The car will continue moving by inertia. “It is definitely not worth experimenting with this problem and testing the system’s reactions,” said the specialist.
Previously, car expert Roman Titov explained how not to get caught out when buying a used car.
